Knall and Fall as Detectives () is a 1953 Austrian-West German comedy film directed by Hans Heinrich and starring Hans Richter, Rudolf Carl, and Ingrid Lutz. It was made as a sequel to the 1952 film Knall and Fall as Imposters. It was shot at the Spandau Studios in Berlin. The film's sets were designed by the art director Rolf Zehetbauer.